All processing is 100% client-side. Port database loaded from IANA registry.
Common ports:
Enter a port number or service name to look up information
Port Ranges
0 - 1023
Well-Known Ports
System/privileged ports. Require root/admin to bind. Used by core services (HTTP, SSH, DNS, etc.)
1024 - 49151
Registered Ports
Assigned by IANA for specific services. Used by applications (MySQL, PostgreSQL, etc.)
49152 - 65535
Dynamic/Private Ports
Ephemeral ports for client connections. Not officially assigned to any service.
Security Status Legend
SECURE
Encrypted communication (TLS/SSL)
INSECURE
Unencrypted, plaintext transmission
CONDITIONAL
Security depends on configuration (STARTTLS, etc.)
DEPRECATED
Should not be used, known vulnerabilities